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Sep
29
revised Reference of explanation of this result about Fourier transforms in euclidean space
edited tags
Sep
29
revised A point-set topology problem
typo
Sep
29
answered A point-set topology problem
Sep
29
comment liminf sequence of C-infty functions
The question makes no sense as it stands, as the functions are defined on different domains $\mathbb R^n$. Presumably this was meant to be $\mathbb R^k$ with a different variable $k$?
Sep
28
comment Popcorn function
Please don't use abbreviations like "smb". The effort of a handful of keystrokes you save stands in no relationship to the effort you cause for everyone who tries to understand your post and isn't aware of the abbreviation.
Sep
28
comment Is a square matrix whose diagonal and antidiagonal elements are all zero always singular?
@Rahul: The secondary diagonal is the one that goes from lower left to upper right; so a $2\times2$ matrix with the given property has all zero entries.
Sep
28
answered Is a square matrix whose diagonal and antidiagonal elements are all zero always singular?
Sep
28
revised Regularity property of tournaments
spelling
Sep
28
revised Integration by inspection - how?
some encouragement
Sep
28
answered Integration by inspection - how?
Sep
28
revised Proposition vs Theorem
edited tags
Sep
28
comment How many possible outcomes can there be in the lottery?
The detailed question is always below; please don't put things in the title that would apply to all questions.
Sep
28
revised How many possible outcomes can there be in the lottery?
copy-edit
Sep
27
comment Domain of a function by inspection
See also this question on how the term "domain" is being used here.
Sep
27
comment Term for generalized antisymmetry?
The expression "antisymmetric up to equivalence" is used in at least some publications.
Sep
27
comment Analytical calculation of the total surface of overlapping spheres
Two times the surface area of one sphere is $8\pi R^2$. And the spheres overlap if $d\lt 2R$, not $d\lt R$.
Sep
27
comment Extracting angular velocity tensor from orthogonal matrices
@linello: I don't understand the question. The fragment "but maybe can be useful" has no subject -- what can maybe be useful? And what do you mean with "How to deal with better derivative approximation scheme"? Which scheme is this referring to?
Sep
27
comment Show the vector calculus integral is zero
@QED: I've made the hyperplanes and the limiting process more explicit -- I hope it's clearer now?
Sep
27
revised Show the vector calculus integral is zero
slightly more explicit
Sep
27
comment Convergence of prime series
Punctuation should go inside double dollar signs (with a \; space); otherwise it gets placed on the next line.